The ergonomic design of these lab stools will allow you to sit up properly while teaching lessons. Seat and backs are made from a chemical resistant poly shell and the under structure is constructed from heavy-duty 14-gauge steel. The pneumatic lift and swivel column adjusts seat to comfortable heights. The teacher stool features a foot rest and adjusts 21-1/2"-29" - ideal for a desk, podium, or LAN work. Choose from 10 colors.